Langley Air Force Base is home to advanced fighter jets, which were moved to another base after UAVs were spotted around it last December, a report said.

U.S. officials don’t know who is behind the drones that have flown unhindered over sensitive national-security sites—or how to stop them.

The Pentagon has confirmed a number of “unauthorized” drone flights last year in restricted airspace over a Virginia base that houses the nation’s most advanced fighter jets. The Wall Street

The military and the Pentagon’s UFO investigating arm have tried to determine the source of the drones that flew over Langley Air Force Base.

Unidentified drones spotted flying over Langley Air Force Base in Virginia have baffled US military officials who are not sure whether it is the work of hostile powers or hobbyists.

Mystery drones breach US military base for 17 days, raising questions about Pentagon's ability to protect sensitive installations and respond to emerging aerial threats.